@Olivier5,
Utter nonsense--in fact, the small states which the creation of the Senate and the Electoral College were intended to conciliate, were lead by New York and New Jersey, neither of which was a slave states. It's also utter bullsh*t, though a popular historical fallacy, that the American economy was successful because of slavery. It was successful
despite slavery. So, for example, the most common export of the nascent United States was grain--not the tobacco, or the later cotton which supported the slave state economies. The slave states uniformly opposed a tariff because they wanted to continue their trade relations with England and France, whereas the tariff sought to protect American manufacturing.